<template>
  <div :class="{'show':show}" class="header-search">
    <svg-icon class-name="search-icon" icon-class="search" @click.stop="click" />
    <el-input  ref="headerSearchSelect" class="header-search-select" placeholder="Search" v-model="search"  @change="querySearch"></el-input>
  </div>
</template>

<script>
import Fuse from 'fuse.js'
import path from 'path'
import i18n from '@/lang'
import { findDictionaryData, dictionaryDataFind } from 'api/common'

export default {
  name: 'HeaderSearch',
  props: {
    searchType: {
      type: String,
      required: true,
      default: '1'
    }
  },
  data() {
    return {
      search: '',
      options: [],
      searchPool: [],
      show: false,
      fuse: undefined
    }
  },
  computed: {
    routes() {
      return this.$store.getters.permission_routes
    },
    lang() {
      return this.$store.getters.language
    }
  },
  watch: {
    lang() {
      this.searchPool = this.generateRoutes(this.routes)
    },
    routes() {
      this.searchPool = this.generateRoutes(this.routes)
    },
    searchPool(list) {
      this.initFuse(list)
    },
    show(value) {
      if (value) {
        document.body.addEventListener('click', this.close)
      } else {
        document.body.removeEventListener('click', this.close)
      }
    }
  },
  mounted() {
    this.searchPool = this.generateRoutes(this.routes)
  },
  methods: {
    click() {
      this.show = !this.show
      if (this.show) {
        this.$refs.headerSearchSelect && this.$refs.headerSearchSelect.focus()
      }
    },
    close() {
      this.$refs.headerSearchSelect && this.$refs.headerSearchSelect.blur()
      this.options = []
      this.show = false
    },
    change(val) {
      this.$router.push(val.path)
      this.search = ''
      this.options = []
      this.$nextTick(() => {
        this.show = false
      })
    },
    initFuse(list) {
      this.fuse = new Fuse(list, {
        shouldSort: true,
        threshold: 0.4,
        location: 0,
        distance: 100,
        maxPatternLength: 32,
        minMatchCharLength: 1,
        keys: [{
          name: 'title',
          weight: 0.7
        }, {
          name: 'path',
          weight: 0.3
        }]
      })
    },
    // Filter out the routes that can be displayed in the sidebar
    // And generate the internationalized title
    generateRoutes(routes, basePath = '/', prefixTitle = []) {
      let res = []

      for (const router of routes) {
        // skip hidden router
        if (router.hidden) { continue }

        const data = {
          path: path.resolve(basePath, router.path),
          title: [...prefixTitle]
        }

        if (router.meta && router.meta.title) {
          // generate internationalized title
          const i18ntitle = i18n.t(`route.${router.meta.title}`)

          data.title = [...data.title, i18ntitle]

          if (router.redirect !== 'noredirect') {
            // only push the routes with title
            // special case: need to exclude parent router without redirect
            res.push(data)
          }
        }

        // recursive child routes
        if (router.children) {
          const tempRoutes = this.generateRoutes(router.children, data.path, data.title)
          if (tempRoutes.length >= 1) {
            res = [...res, ...tempRoutes]
          }
        }
      }
      return res
    },
    querySearch(query) {
      if (query !== '') {
        if (this.searchType == '1') { // 管理端
          this.getDictionaryData(query)
        } else {
          this._dictionaryDataFind(query)
        }
      } else {
        this.options = []
      }
    },
    // 查询后台管理系统的数据字典
    getDictionaryData(query) {
      var self = this
      this.options = []
      var tempData = {
        code: query
      }
      findDictionaryData(tempData).then(response => {
        var dictionaryData = response.data.dictionaryData
        this.$emit('queryData', dictionaryData)
      })
    },

    // 查询账户数据的数据字典
    _dictionaryDataFind(query) {
      var self = this
      this.options = []
      var tempData = {
        code: query
      }
      dictionaryDataFind(tempData).then(response => {
        var dictionaryData = response.data.dictionaryData
        this.$emit('queryData', dictionaryData)
      })
    }
  }
}
</script>

<style lang="scss" scoped>
  .header-search {
    /*width: 200px;*/
    font-size: 0 !important;

    .search-icon {
      cursor: pointer;
      font-size: 18px;
      vertical-align: middle;
    }

    .header-search-select {
      font-size: 18px;
      transition: width 0.2s;
      width: 0;
      overflow: hidden;
      background: transparent;
      border-radius: 0;
      display: inline-block;
      vertical-align: middle;

      /deep/ .el-input__inner {
        border-radius: 0;
        border: 0;
        padding-left: 0;
        padding-right: 0;
        box-shadow: none !important;
        border-bottom: 1px solid #d9d9d9;
        vertical-align: middle;
      }
    }

    &.show {
      .header-search-select {
        width: 210px;
        margin-left: 10px;
      }
    }
  }
</style>
